No netfilter for wifi tether

So I have my D2G rooted for a while now on the stock rom and everything was working fine. Tether worked no problem. A couple of days ago I decided that I wanted to clear data and chache to erase useless information. My phone now runs faster then before. But now its telling me when I go into the Tether app that, "No Netfilter"
I un-rooted my phone with Z4 root and re-rooted several times and it still doesn't work. Any advice? I really need to use wifi tether for work and I would appreciate if someone could help. Thanks